
On Generalized Rigid Rings 

LIN Hu (Xuhui Community College, Shanghai200032) 

Hausdorff Measure of Likely Limit Sets of Two Types of Feigenbaum Maps 

HUANG Gui feng (Department of Basics of Dalian Naval Academy, Dalian116018) 

Toeplitz Hankel Type Operators on L_a~1(Ω) 

XIANG Yi xing (Hangzhou workers' spare time university, Hangzhou310003, China) 

A Model of Fuzzy Control of Cement Rotary Kiln 

WANG Qing tao (Naval Logistic College, Tianjin300450) 

A Method of Appraising Coefficient of Difficulty 

MA Jian hua (Huaibei Coal Teacher's College, Huaibei, Anhui235000) 

On the N—Classes of Ordered Semigroups 

XU Xin zhai (Department of Mathematics, Shandong Normal University, Jinan250014) 

On CRings 

HAO Xiu mei (Department of Mathematics, Shandong Finance Institute, Jinan250014) 

Singular Perturbation of Boundary Value Problems for Second Order Quasilinear Differential Equations 

XIE Feng (Anhui Normal University, Wuhu241000) 

Approximation and Saturation on a Kind of Interpolation Operators of Entire Exponential Type in the Hlder Metric 

WANG Mei ying (Nanjing Auditing Institute, Nanjing210029) 

Two Constructions of Cartesian Authentication Codes from Sympletic Geometry 

ZHENG Ye long 1, LI Rui hu 2 (1. University of Science and Technology of China, Hefei230052; 2. Missle Inst. of Air Force Engineering University, Sanyuan, Shanxi713800) 

Existence of Periodic Solution or Almost Periodic Solution for Lienard Equation 

WANG Hong xi (Dept. of Math., Anhui Agricultural University, Hefei230036) 

Stability of a Class of Fourth Order Nonlinear System 

XU Jing LI Yu jie (Wuhu Teaches College, Wuhu241008) 

The Polyhedral Cone in Tensor Vector Space 

NIU Shao zhang (Beijing University of Posts and Telecommunications, Beijing100876) 

Orbit Properties on Diagonlization 2 th Nonautonomous System 

PANG Jin biao, HOU Wei gen (Math & Physics Department of Anhui Polytechnic University, Maanshan Anhui243002) 

Visiting Track Analysis about Disastrous Zone 

HUANG Ji li, QIAN Sheng rong (Anhui Institute of Architecture, Hefei230022) 

The Whole Teaching Method of Advanced Mathematics 

WANG Geng (Anhui Mechanical and Electrical Engineer College, Wuhu241000) 

Logical Proof Concerning Higher Mathematics 

LI Jing, ZHANG Dong sheng (Fuyang College of Education, Fuyang236016) 

A ShortCut Method for Finding the Adjoint Pull Back Matrix of the Given Matrix 

YE Liu qing 1, DU Xue wu 2 (1.Department of Mathematics, Jiaozuo College of Education, Jiaozuo454152 2.Department of Foundamental Courses, Jiaozuo Institute of Technology, Jiaozuo454159) 

The Elementary Canonical Form of a Matrix and the System of Linear Equations 

HAN Wei xin (Department of Mathematics Tianjin University, Tianjin300072) 